为进一步降低气囊隔振器垂向和横向刚度，减小其横垂刚度比，提高隔振效果，在气囊下端串联弹性元件形成复合结构气囊隔振器。建立有限元模型对其气压-载荷、垂向静刚度、横向静刚度等静态特性进行研究。为提高分析准确性，用三维实体单元模拟气囊囊壁，并对模型进行优化处理。生产样机进行试验验证，试验结果与有限元结果误差较小，表明该建模方法准确度较高。与原气囊静态特性对比发现：相同气压下，复合气囊承受载荷减小；额定载荷下，复合气囊垂向静刚度小幅降低、横向静刚度大幅降低。
To further reduce the vertical and lateral stiffness of the air spring, reduce the ratio of lateral to vertical stiffness, improve the vibration isolation effect, an elastic element is connected in series at the lower end of the air spring to form a compound structure air spring(CSAS). A finite element model was established to study its static characteristics such as air pressure-load, vertical static stiffness, and lateral static stiffness.To improve analysis accuracy, three-dimensional entity element was used to simulate the rubber capsule, and the model was optimized. Then, the prototype is produced and tested, the error between the test results and the finite element analysis(FEA) results is small, indicating that the modeling method is accurate. Compared with the static characteristics of the original air spring, it is found that under the same air pressure, the CSAS bears less load; under the rated load, the vertical static stiffness of the CSAS is slightly reduced, and the lateral static stiffness is greatly reduced.
2022,44(4): 38-42 收稿日期：2020-08-25
DOI：10.3404/j.issn.1672-7649.2022.04.009
分类号：O328
基金项目：重点实验室基金资助项目（9140C280301）
作者简介：尹礼航(1995-)，男，硕士，研究方向为振动与噪声控制
参考文献：
[1] SHUAI C G, LI P H, Emiliano Rustighi. A study on calculation method for mechanical impedance of air spring[J]. Journal of Physics: Conference Series, 2016 (744).
[2] 佘雷兵, 龚积球. 高柔度圆弹簧(加橡胶垫)的稳定性研究[J]. 中国铁道科学, 1991(2): 43–53
[3] 蒋益平. 橡胶垫参数及结构形式对高圆簧加橡胶垫的横向刚度的影响[J]. 机械, 2014, 41(1): 19–23
[4] MOHD A S, AZMA P, THOMPSON D, et al. Transmissibility of a laminated rubber-metal spring: a preliminary study[J]. Applied Mechanics and Materials, 2013, 393: 661–665
[5] 王江涛, 唐斌, 薛冬新, 等. 橡胶钢丝绳复合隔振器的试验[J]. 振动、测试与诊断, 2011, 31(4): 488–491,537
[6] 杜聪如, 赵应龙. 复合式气囊隔振器垂向静态特性研究[J]. 舰船科学技术, 2016, 38(6): 97–100,104
[7] 许恒波, 刘少义, 张华. 复合式空气弹簧的开发设计[J]. 北华航天工业学院学报, 2013, 23(6): 35–38
[8] 何琳, 赵应龙. 舰船用高内压气囊隔振器理论与设计[J]. 振动工程学报, 2013, 26(6): 886–894
[9] 朱石坚, 何琳. 船舶减振降噪技术与工程设计[M]. 北京: 科学出版社, 2002.
[10] 屠德新, 黄昌文, 陈毛权. 基于Abaqus的帘线参数对汽车空气弹簧垂向刚度影响的研究[J]. 汽车技术, 2011(2): 10–17
[11] 陈鼎, 李芾, 黄云华. 基于有限元的空气弹簧刚度分析[J]. 电力机车与城轨车辆, 2010, 33(6): 8–12
